<template>
  <div>
    <div class="mui-numbox" data-numbox-min='1'>
        <button class="mui-btn mui-btn-numbox-minus" type="button">-</button>
        <input id="test" class="mui-input-numbox" ref="numbox" type="number" value="1" @change="countChanged"/>
        <button class="mui-btn mui-btn-numbox-plus" type="button">+</button>
    </div>
  </div>
</template>

<script>
import mui from '../../lib/mui/js/mui.min.js'
export default {
  mounted() {
      //初始化数字选择框组件
      mui('.mui-numbox').numbox()
  },
  methods: {
    countChanged(){//每当文本框中的数据被改变，就把最新的数据通过事件调用传递给父组件
      this.$emit('getcount',parseInt(this.$refs.numbox.value))
    }
  },
  props:["max"],
  watch: {
    //属性监听
    // eslint-disable-next-line
    'max':function(newVal,oldVal){//使用JS API 设置numbox的最大值
      mui('.mui-numbox').numbox().setOption('max',newVal)
    }
  },
}
</script>

<style lang="scss" scoped>
.mui-numbox{
  height: 25px;
}
.mui-numbox [class*=btn-numbox]{
  background-color: #ddd;
}
</style>
